@prefix : . @prefix dc: . @prefix rdfs: . @prefix owl2xml: . @prefix foaf: . @prefix reco: . @prefix dct: . @prefix owl: . @prefix xsd: . @prefix rdf: . @prefix wai: . reco:union a owl:ObjectProperty ; rdfs:comment "A property which reifies a disjunction of constraints."@en ; rdfs:domain reco:Pattern ; rdfs:label "Union composition"@en ; rdfs:range reco:Filter . reco:utility a owl:DatatypeProperty ; rdfs:comment "This property captures the utility value of a rating. The utility in RECO is measured in the real interval [-1,1]. In practice, other discrete scales can be also used to measure users' opinions on resources, such as the Likert scale. "@en ; rdfs:domain reco:Preference ; rdfs:label "Utility"@en ; rdfs:range xsd:float . reco:excludedPreference a owl:ObjectProperty ; rdfs:comment "This property relates a demand with a particular preference P. The items that fulfill the constraints of P are excluded from the set of results calculated for this demand."@en ; rdfs:domain reco:Demand ; rdfs:label "Excluded Preference"@en ; rdfs:range reco:Preference ; rdfs:subPropertyOf reco:preference . reco:holds a owl:ObjectProperty ; rdfs:comment "This property relates a person with a preference."@en ; rdfs:domain [ a owl:Class ; owl:unionOf ( wai:Profile wai:Role foaf:Agent foaf:Group ) ] ; rdfs:label "Holds"@en ; rdfs:range reco:Preference . reco:preference a owl:ObjectProperty ; rdfs:comment "This property relates a demand with the set of preferences that defines its matchmaking conditions. "@en ; rdfs:domain reco:Demand ; rdfs:label "Preference"@en ; rdfs:range reco:Preference . reco:requiredPreference a owl:ObjectProperty ; rdfs:comment "This property relates a demand with a preference P. The items fulfilling the constraints of P must be included in the final set of results for this demand."@en ; rdfs:domain reco:Demand ; rdfs:label "Required Preference"@en ; rdfs:range reco:Preference ; rdfs:subPropertyOf reco:preference . reco:Demand a owl:Class ; rdfs:comment "Groups of preferences representing users' requests at a given context or situation."@en ; rdfs:label "Demand"@en ; rdfs:subClassOf owl:Thing . reco:filter a owl:ObjectProperty ; rdfs:comment "A property that relates a pattern with a constraint of the value of a datatype property. For instance, \"less than 180 cms height\" or \"released before 1980\"."@en ; rdfs:domain reco:Pattern ; rdfs:label "Filter"@en ; rdfs:range reco:Filter . reco:about a owl:FunctionalProperty , owl:ObjectProperty ; rdfs:comment "A property that relates a preference with its main pattern."@en ; rdfs:domain reco:Preference ; rdfs:label "About"@en ; rdfs:range reco:Pattern . reco:Rating a owl:Class ; rdfs:comment "A rating is a quantitative measurement of the \"appealingness\" of a particular item to a user."@en ; rdfs:label "Rating"@en . reco:operator a owl:FunctionalProperty , owl:ObjectProperty ; rdfs:comment "A property that relates a filter to the operator restraining the value of a datatype property."@en ; rdfs:domain reco:Filter ; rdfs:label "Operator"@en ; rdfs:range reco:Operator . reco:assignedBy a owl:ObjectProperty ; rdfs:comment "This property relates a rating with the person having carried out it."@en ; rdfs:domain reco:Rating ; rdfs:label "Assigned by"@en ; rdfs:range [ a owl:Class ; owl:unionOf ( wai:Profile wai:Role foaf:Agent foaf:Group ) ] . reco:Operator a owl:Class ; rdfs:comment "Boolean operations on data values: string comparisons, numerical intervales and (in)equality. Operators are reused from the X-path specification to ensure interoperability."@en ; rdfs:label "Operator"@en . reco:Pattern a owl:Class ; rdfs:comment "Patterns are reifications of constraints, which are conditions about the desired or preferred attributes of the resources. A constraint ranges over a set of individuals. RECO considers several kind of constraint expressions: (1) conjunction of constraints: \"music from the sixties\"; (2) disjunction of constraints: \"music or films\"; (3) composition of constraints: \"cars with powerful engines\"; (4) datatype constraints based on boolean operators: \"released before 1980\"."@en ; rdfs:label "Pattern"@en . reco:Preference a owl:Class ; rdfs:comment "A preference is a qualitative description of the desired attributes that resources must ideally satisfy in order to be of interest for a user. A preference is described by a set of constraints."@en ; rdfs:label "Preference"@en ; rdfs:subClassOf owl:Thing . reco:Filter a owl:Class ; rdfs:comment "A datatype constraint based on boolean operators."@en ; rdfs:label "Filter"@en . reco: a owl:Ontology ; rdfs:isDefinedBy reco:reco.owl ; dc:contributor "Diego Berrueta (Fundación CTIC)" , "Emilio Rubiera (Fundación CTIC)" , "Carlos Ruiz (iSOCO S.A.)" ; dc:creator "Luis Polo (Fundación CTIC)" , "Iván Mínguez (Fundación CTIC)" ; dc:date "August, 2011"@en ; dc:description "The RECO ontology defines the vocabulary for representing prefereces-as-constraints and preferences-as-ratings as RDF graphs. This lightweight vocabulary provides domain-independent means to describe user profiles in a coherent and context-aware way. RECO has been designed as an extension of both Friend-Of-A-Friend (FOAF) and Who Am I! (WAI) ontologies."@en ; dc:rights "Copyright by Fundación CTIC" ; dc:title "RECommendations Ontology"@en ; dct:license ; owl:priorVersion . reco:optionalPreference a owl:ObjectProperty ; rdfs:comment "This property relates a demand to a preference P. The items that fulfill the constraints of P increase or decline their utility value according to the utility of P."@en ; rdfs:domain reco:Demand ; rdfs:label "Optional Preference"@en ; rdfs:range reco:Preference ; rdfs:subPropertyOf reco:preference . reco:rates a owl:ObjectProperty ; rdfs:comment "This property relates a rating with the resource assessed. Notice that this property has an open range (rdfs:Resource), therefore ratings can be applied to anything, including preferences themselves."@en ; rdfs:domain reco:Rating ; rdfs:label "Rates"@en .